Air pump



A. KREHLIK.

MR PUMP.

APPLICATION FILED uov. $0, 1920.

Patented May 2, 1922.

-"r ris ALBERT KREHLIK, 0E CLEVELAND, OHIO.

- err, PUMP.

Specification of Letters Patent. Pgtgntgfl B1 3? 2 1922.

Application filed. November 10, 1920. Serial No; 423,153

- driven? air pumps particularly designed and adapted for useinconnection with a suitable motor driven element or member of the motorof a vehicle such as an automobile, motor truck, or the like, theimproved pump being designed to be used as a supplemental device orappliance for inflatingpneumatic ti'resof such motor vehicles.

The primary object of the invention is to provide a generally improvedair pump or appliance of the class indicated,- which will beexceedinglysimple in construction, cheap of manufacture, and eflicient in use." Afurther object is the provision of a pump of this class which may bereadily at tached to'or detached from a suitable part or support of themotor and provided with means whereby the piston driving wheel and thepump body may be moved into and out of operative position with respectto the motor driven element (in the present instance the fan belt), theimproved appliance being adapted to be normally supported out of contactwith the motor driven element.

With the above mentioned and other ends in view, the invention consistsin the novel construction, arrangement, and combination of parts,hereinafter described, illustrated in one of its embodiments in theaccompanying drawings and particularly pointed out in the appendedclaims.

Referring to the drawings, forming a part of this specification, Figure1 is a rear view of the improved .air pump, detached, a portion of thepump body being broken away for the purpose of clearer illustration ofthe parts. i

Fig. 2, a side elevation of the same.

Fig. 3, a transverse cross sectional view, taken on line 33 of Fig. 2,and illustrating in particular the manner of mounting.

Fig. 4:, a front elevation of the same attached to an ordinary motorsuch as used on the ordinary motor vehicle.-

Similar numerals of reference designate like parts throughout all thefigures of the drawings.

"As a means of l'nounting the improved pump in suitable relation to amotor casing i, and a suitable motor driven element 2, as

for example the fan belt, 'the improved pump body'and the piston drivingelementor wheel hereinafter described or preferably mounted by means ofa support consisting, in the present instance, of an attaching base32and anroffset supporting arm3. The attachingbase 3, may be providedwith a bolt opening 3, to receive one of the cap screwsl' (see Fig.4),.of the motor casing. The base portion of the arm 3, is provided at.

one [side -with anal-in 3, )rovided, in" the present instance, withbracket 4;, having an opening for securing a spring resisted ad- Justingdevice, hereinafter described, for moving the pumpidriving'wheel intoand out of contact with the motor driven element 'or fan belt 2.

' If desired, the arm'3, be provided with ad arm 3, which may beprovided with an adjusting screw 5, adapted to engage with a: suitablepart-'of the adjacent'motor vehicle to prevent any twisting motion ofthe support on the attaching screw 1 As a means of connecting the pumpcylinder or body 6, to the offset arm 3, so as to swing in alongitudinal plane at one side of the lat ter, the cylinder body 6, isprovided with a head 6 terminating in an arm 6*, pivotally anddetachably connected to the top of the .arm 3, by means of a pivotattaching element 7. p

The head '6, is preferably provided with the conventional form of ballvalve arran ed within the nipple 6", adapted to discharge the fluid orair into asuitable conduit pipe or hose leading from the nipple 6, tothe valve stemof the tire to be inflated;

The tubular pump cylinder 6, is provided with a ring head 6, the heads 6and 6, being connected by connecting bolts 8, eX- tending-through lugson the said heads. The I ring head 6 is provided with an arm 6 eX-tending at one side of the planeof the pump, cylinder and provided atits lower end with a laterally extending shaft bearing 9, and arrangedto extend in a plane with the offset portion 3 of the arm 3.

by means of a nut 10", and washer 10". The

shaft 10, is provided with a piston driving wheel 11, adapted to receiveits motion from the motor driving element or belt 2, when thrown intoand out of contact with the latter, as hereinafter referred to. Thewheel 11, is provided with a connecting rod '12,

leading :to the piston 13, the latterbeing pro- V vided with the usualflexible valve disc 13, 10

which upon the down movement of the pis- "ton will permit airv to passinto the piston chamber and upon the return movementof the piston willdischarge the same through the valve in the nipple 6.

As a means of moving the rocking pump cylinder 6, together with thedriving wheel 11,: into and'out of operative relation to the motordriven element or belt 2, the shaft bearing '9, is provided with athreaded rod orlink 14, extendingthrough an opening in the bracket 4:,and adapted to be adjusted by means of a winged adjusting nut 15.- As

7 a means of moving the shaft bearing 9, and

wheel-l1,toward the driven be1t 2, and par-, ticularly; holding saidwheel 11, in contact flwith the belt 2, under spring resistance, a

V 1. An air pump, comprising a pump cylinder, a 'valved cylinder headprovided with a supporting arm extending at a'plane at one side ofsaidpump cylinder, a cylinder ring head on the opposite end of said pumpcylinder and provided with an arm extending in an opposite direction andin a plane with said supporting arm and prov'ided'with a laterallyextending shaft bearing, a shaft in the latter provided with. a frictionwheel on the opposite side of said last mentioned arm,a connecting rodon said friction wheel extending through said cylinder ring head,

a piston in said pump cylinder connected to a said connecting rod, andconnecting bolts on the outside of said cylinder detachably connectingsaid valved cylinder head and cylini der ring head to each other and onsaid pump cylinder, V

2. In a motor driven air pump, the combination comprising a supportincluding an 1 attaching base andan offset supporting arm, 7

a pump cylinder carried by and adapted to rock atone side of the latter,a piston driving wheel, an arm carried atone end of said pump body andhaving a transverse shaft hearing below said ofl'set'portion, a bracketon said support above said attaching base, and an adjustablespringresisted arm on sald bracket connectedto said spindle supporting memberwhereby said wheel and pump cylinder are adaptedto be thrown into andout of operative engagement with a driving elementg." r

In testimony whereof I haveafiixed my signature. c

ALBERT KREHLIK.

